/**
 *  Copyright (c) 1997-2013, www.tinygroup.org (luo_guo@icloud.com).
 *
 *  Licensed under the GPL, Version 3.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.gnu.org/licenses/gpl.html
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.tinygroup.tinydbdsl.visitor;

import org.tinygroup.tinydbdsl.base.Column;
import org.tinygroup.tinydbdsl.expression.Function;
import org.tinygroup.tinydbdsl.selectitem.AllColumns;
import org.tinygroup.tinydbdsl.selectitem.AllTableColumns;
import org.tinygroup.tinydbdsl.selectitem.CustomSelectItem;
import org.tinygroup.tinydbdsl.selectitem.Distinct;
import org.tinygroup.tinydbdsl.selectitem.SelectExpressionItem;
import org.tinygroup.tinydbdsl.selectitem.Top;

/**
 * selectitem的访问者
 * @author renhui
 *
 */
public interface SelectItemVisitor {

	void visit(AllColumns allColumns);

	void visit(AllTableColumns allTableColumns);

	void visit(SelectExpressionItem selectExpressionItem);
	
	void visit(Distinct distinct);
	
	void visit(Top top);
	
	void visit(CustomSelectItem selectItem);
	
	void visit(Function function);

	void visit(Column column);
}
